Amine Compound Functional Layers for Long-Life Light-Emitting Elements

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Solution Overview

Problem

Existing light-emitting elements in display devices face challenges in achieving high luminous efficiency and long lifespan, particularly in the stability and charge transportability of hole transport regions.

Innovation Solution

Incorporation of an amine compound represented by specific structural formulas in the functional layers of the light-emitting element, including a hole transport region and electron transport region, to enhance luminous efficiency and element lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional materials are used in hole transport regions, then device structure is simple, but luminous efficiency and element lifespan are insufficient

Engineering Contradiction:

Improveluminous efficiencyVSAvoidmaterial structure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent employs composite material strategies by combining the amine compound (Formula 1) with specific aryl groups (Formula 2 or 3) and substituents (R1, R2, R3) to create a sophisticated molecular structure. This composite approach in the hole transport region achieves high luminous efficiency and extended lifespan while maintaining reasonable structural complexity through systematic molecular design.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies parameter changes by modifying the molecular structure of hole transport materials through varying the amine compound configuration (Formula 1), substituent types (R1, R2, R3), and aryl group compositions (Formula 2 or 3). These structural parameter adjustments optimize charge transportability and stability, directly improving luminous efficiency and element lifespan.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conventional materials are used in hole transport regions, then manufacturing process is simple, but charge transportability and stability are insufficient

Engineering Contradiction:

Improvestability and charge transportabilityVSAvoidmaterial synthesis difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent modifies material parameters by designing specific amine compounds (Formula 1) with controllable substituents (R1, R2, R3) and aryl group configurations (Formula 2 or 3). These parameter adjustments enhance charge transportability and stability in the hole transport region, achieving reliable performance through systematic molecular optimization.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses composite material design by integrating the amine core (Formula 1) with specific aryl groups (Formula 2 or 3) and various substituents. This composite structure improves reliability and charge transportability while maintaining manufacturability through established organic material synthesis approaches.

Inventive Principle:

Principle #40Composite materials

3Reliability

If high performance materials are incorporated in functional layers, then luminous efficiency and lifespan are improved, but material complexity increases

Engineering Contradiction:

Improveelement lifespanVSAvoidfunctional layer material complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent achieves extended element lifespan by optimizing material parameters through the amine compound structure (Formula 1) with specific aryl groups (Formula 2 or 3) and substituents (R1, R2, R3). These parameter changes enhance material stability and durability in functional layers while managing complexity through systematic molecular design.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention applies local quality by designing specific functional groups and substituents (R1, R2, R3) at particular positions within the amine compound (Formula 1). This localized optimization of molecular structures enhances element lifespan in critical regions while maintaining overall material manageability and reducing unnecessary complexity.

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The amine compound improves the luminous efficiency and lifespan of the light-emitting element, resulting in enhanced display quality and performance.

Implementation Method 1

holes and electrons injected separately from a first electrode and a second electrode recombine in an emission layer

Methodology Applied

Scientific EffectCharge transport: Conduction (electrical)

Implementation Method 2

This recombination causes a light-emitting material in the emission layer to emit light

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS20250324908A1Light-emitting element, amine compound for the same, and electronic apparatus including the same

Publication Date: 2025.10.16 SAMSUNG DISPLAY CO LTD

AI summary

A light-emitting element includes a first electrode, a second electrode on the first electrode, and at least one functional layer between the first electrode and the second electrode and including an amine compound represented by Formula 1.